PHP script and Qmail

[lxhicks4]

I have a php script running on my server that creates an email message. the message sends ok but it appears the script runs as root and uses the root@systemname address for the from: line rather than the virtual domain address.

Is their a way to change that so the script generates the email with the from and replyto lines using the proper domain name? Can I also change the user name?

thanks

larz